gemstone
Ruby
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vibrant pinkish-red color due to chromium, subconchoidal fracture, and adamantine to vitreous luster.
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Physical properties
Hardness of 9 on the Mohs scale, vibrant pinkish-red color due to chromium, subconchoidal fracture, and adamantine to vitreous luster.
Formation & geological history
Forms in metamorphic and igneous rocks, specifically marbles and aluminum-rich silicates under high temperature and pressure.
Uses & applications
Highly prized as a precious gemstone in fine jewelry and historically used in laser technology and watch bearings.
Geological facts
Ruby is one of the traditional cardinal gemstones and derives its name from 'ruber', Latin for red.
Field identification & locations
Identified by its extreme hardness, red streak, and hexagonal crystal habit; found globally with notable deposits in Myanmar, Thailand, and East Africa.
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